Exception when trying to deserialize a xml file

Question

Im trying to deserialize an XML file with XmlSerializer, however im getting this exception:

"There is an error in XML document (1, 2)" The innerexception is: "<Mymessage xmlns='http://MyMessages/'> was not expected."

Which is the very first line in the XML file. my guess is that it has something to do with the xmlns.

I tried to ask Google, and then tried to add the following line to my code

[XmlRoot("MyMessage", Namespace="'http://MyMessages/")]

But I still get the same exception.

This is an old question but it's important to know that same error can be generated due to a class missing a Serializable attribute. — Adam Caviness
– Adam Caviness, Commented Jan 30, 2012 at 18:03

CruelIO · Accepted Answer · 2009-03-25 12:01:57Z

8

In the constructor of the XmlSerializer i needed to specify a default namespace, after doing that everything worked just fine

answered Mar 25, 2009 at 12:01

CruelIO

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1 Comment

Jon Over a year ago

Can you give a code example of how you solved this? I think I am having the same issue, but specifying the default namespace does not make a difference.

Binoj Antony · Accepted Answer · 2009-03-24 05:58:37Z

3

Please provide the full XML file code to help understand the issue better.

Also put this as the first line in the xml file and see if this solves the issue

 <?xml version="1.0" encoding="utf-8"?>

edited Mar 24, 2009 at 5:58

answered Mar 23, 2009 at 14:15

Binoj Antony

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1 Comment

marc_s Over a year ago

I would strongly recommend to use "utf-8" instead of iso-8859-1 for all interopertable web service work!

timdougall · Accepted Answer · 2012-09-19 01:29:52Z

Further to CruelIO's response, I resolved the error by adding:

[XmlRoot("RenderResult", Namespace = "http://mynamespace.uri.org")]

to the class that I was trying to deserialize. e.g: the serialization code was:

RenderResult result; using (var memoryStream = new MemoryStream(data)) { var xmlSerializer = new XmlSerializer(typeof(RenderResult)); result = (RenderResult)xmlSerializer.Deserialize(memoryStream); }

and my class looked like this:

[XmlRoot("RenderResult", Namespace = "http://mynamespace.uri.org")] public class RenderResult { }

Marc Gravell · Accepted Answer · 2009-03-23 14:22:41Z

It sounds like you have a borked xml file. Easy ways to find out:

try loading it into an xml viewer
or just make sure it has a .xml extension and load in VS or IE
or run xsd.exe over it

If they complain, then the xml is certainly corrupt. If they work fine, and display your data, then you probably have the serialization attributes wrong. Try using xsd.exe with the "/classes" switch to see what it would do with it...

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